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CISDOC database

Document ID (ISN)78439
CIS number 02-652
ISSN - Serial title 1351-0711 - Occupational and Environmental Medicine
Year 2001
Convention or series no.
Author(s) Lee H.S., Phoon W.H., Ng T.P.
Title Radiological progression and its predictive risk factors in silicosis
Bibliographic information July 2001, Vol.58, No.7, p.467-471. 8 ref.
Abstract 141 patients with silicosis contracted from granite work with available serial chest X-ray films of acceptable quality taken over a period of 2 to 17 years were selected for study. 94 had ended exposure at least 5 years earlier. Radiological progression was assessed by paired comparison of the initial and most recent radiographs. Overall, 37% of patients had radiological evidence of progression. As expected, progression was more likely to be found after longer periods of follow up (the interval between the two chest X-ray films) with a 20% increased odds of progression for every additional year of follow up. After adjustment for varying intervals of follow up, the probability of radiological progression was found to be significant if large opacities were present in the initial chest X-ray film. Progression was also less likely to be found among those who had ended exposure to silica earlier. Tuberculosis was also associated with increased likelihood of progression.
Descriptors (primary) diagnosis; radiological classifications; radiological changes; risk factors
Descriptors (secondary) probability analysis; tuberculosis; granite; chest radiography; stone dressing; prediction; silicosis
Document type D - Periodical articles
Country / State or ProvinceSingapore
Subject(s) Occupational pathology
Broad subject area(s) Occupational medicine, epidemiology
Browse category(ies) Bacterial and parasitic diseases